Sunday, December 5, 2010

HW 10

Objective 1

1) Suspensions have large solid particles, and colloids have smaller particles that are microscopic and are much smaller than suspensions and solutions. 
2) The particles dissolve into the solvent.  
3) The boiling point of the solvent will be higher without being a solution. The freezing point will be lower.
4) It would be a solution because water is the "universal solvent", and almost any solution mixed with water will disintegrate. 
5)Solvents make the boiling point higher, and the freezing point lower.
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Objective 2


1) Concentration is how much of one solution is mixed with another.
2) It is useful because you can use it to identify the substance because it is a type of matter.
3) The pressure, temperature, and polarity affect it.
4) Heat breaks the molecules apart of the solute and create solvent bonds.
5)It is helpful because it is a characteristic of matter.
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Objective 3

1) Acids taste sour, can change litmus paper from blue to red, react with metals to create gases, and react with bases to make water and salt.
2) Bases are bitter, feel soapy, can make the litmus paper blue again if it was red from an acid, and create salts with acids.
3) Yes, because acids make it red, and bases turn it back to blue.
4) The food would be sour, like a lemon.
5) You should wear gloves when spraying fertilizer because fertilizer sometimes has salts in it, which can burn your skin. 
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